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dev:codingconventions [2018/12/19 12:19]
tmueller [Use existing infrastructure]
dev:codingconventions [2018/12/21 08:41] (current)
tmueller [Use existing infrastructure]
Line 40: Line 40:
 ===== Use existing infrastructure ===== ===== Use existing infrastructure =====
  
-Always prefer [[https://​gcc.gnu.org/​onlinedocs/​gcc-8.2.0/​gfortran/​Intrinsic-Procedures.html|built-in (intrinsic) functions]] instead of hand-coded routines since they usually include extra numerical checks to avoid intermediate under- or overflow while still performing optimally. ​Example: +Always prefer [[https://​gcc.gnu.org/​onlinedocs/​gcc-8.2.0/​gfortran/​Intrinsic-Procedures.html|built-in (intrinsic) functions]] instead of hand-coded routines since they usually include extra numerical checks to avoid intermediate under- or overflow while still performing optimally. ​Examples:
- +
-  * ''​NORM2''​ instead of ''​%%SQRT(x(1)**2 + x(2)**2 + x(3)**2)%%''​+
  
 +  * ''​NORM2(x)''​ instead of ''​%%SQRT(x(1)**2 + x(2)**2 + x(3)**2)%%''​
 +  * ''​DOT_PRODUCT(x,​ x)''​ instead of ''​%%x(1)**2 + x(2)**2 + x(3)**2%%''​
 +  * ''​DOT_PRODUCT(x,​ y)''​ instead of ''​%%x(1)*y(1) + x(2)*y(2) + x(3)*y(3)%%''​
  
  
dev/codingconventions.1545221978.txt.gz · Last modified: 2018/12/19 12:19 by tmueller